Question:

If you touch concentrated $ {HNO_3}$ with your finger and immediately wash it with water, then the skin at the place where it came into contact with $ {HNO_3}$ becomes yellow. This is because of :

Updated On: Jul 6, 2022
  • the formation of Xanthoprotein
  • the absorption of $\ce{HNO_3}$ by skin
  • the blood absorbing $\ce{HNO_3}$
  • the absorption of yellow/brown $\ce{NO_2}$ gas
Hide Solution
collegedunia
Verified By Collegedunia

The Correct Option is A

Solution and Explanation

Nitric acid attacks proteins forming a yellow nitro compound called xanthoprotein. It therefore, stains skin and renders wool yellow. This property is utilised for the test of proteins.
Was this answer helpful?
0
0

Top Questions on p -Block Elements

View More Questions

Notes on p -Block Elements

Concepts Used:

P-Block Elements

  • P block elements are those in which the last electron enters any of the three p-orbitals of their respective shells. Since a p-subshell has three degenerate p-orbitals each of which can accommodate two electrons, therefore in all there are six groups of p-block elements.
  • P block elements are shiny and usually a good conductor of electricity and heat as they have a tendency to lose an electron. You will find some amazing properties of elements in a P-block element like gallium. It’s a metal that can melt in the palm of your hand. Silicon is also one of the most important metalloids of the p-block group as it is an important component of glass.

P block elements consist of: